SOLUTION: For what values of x are the following expressions defined? a)the root of x squared + 1 I have the answer and it says x can be all real numbers but I don't know why?? Can

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Question 786078: For what values of x are the following expressions defined?
a)the root of x squared + 1
I have the answer and it says x can be all real numbers but I don't know why??
Can you please help me?
Thank you very much!

Answer by Cromlix(4381)   (Show Source): You can put this solution on YOUR website!

x can be all real numbers as
you will never produce a negative value under
the square root(even with negative values
of x)
Hope this helps.
:-)

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